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https://issues.apache.org/jira/browse/SPARK-20931?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yuming Wang resolved SPARK-20931.
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Resolution: Fixed
Fix Version/s: 2.3.0
> Built-in SQL Function ABS support string type
> ---------------------------------------------
>
> Key: SPARK-20931
> URL: https://issues.apache.org/jira/browse/SPARK-20931
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 2.2.0
> Reporter: Yuming Wang
> Labels: starter
> Fix For: 2.3.0
>
>
> {noformat}
> ABS(<string_expression>)
> {noformat}
> Hive/MySQL support this.
> Ref:
> https://github.com/apache/hive/blob/4ba713ccd85c3706d195aeef9476e6e6363f1c21/ql/src/java/org/apache/hadoop/hive/ql/udf/generic/GenericUDFAbs.java#L93
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